Platyfrons Yoshimoto 1990

PLATYFRONS Yoshimoto, 1990 (Figs 252–256) Platyfrons Yoshimoto, 1990: 79. Type species: Platyfrons helavai Yoshimoto, 1990, by original designation. Diagnosis. Face without subantennal sulcus ventral to each torulus and with a pit medially next to each torulus (Fig. 252a); toruli separated by about 2× their own height from transverse trabecula (Fig. 252a); propleura narrowly abutting each other anterior to prosternum; scutellum anteriorly with a deep sulcus at level of each notaulus extending from transscutal articulation posteriorly for a short distance (Fig. 255); fore wing usually with a wide dark band beyond venation (Fig. 254); propodeum with widely spaced and diverging submedian carina dorsoanteriorly, separated posteriorly by a transverse carina from the more closely spaced and parallel ventroposterior submedian carinae (Fig. 255); the two sets of carinae form a distinct angle at their junction (best seen in lateral view), petiole apparently attached posteriorly to gt 1 (Fig. 256). Remarks. Platyfrons belongs to the Polynema group of genera. The only similar genus in configuration of the propodeal carina is Polynemula, which differs in the ovipositor projecting distinctly anteriorly ventral to the mesosoma. The short, deep sulcus on the scutellum posterior to each notaulus does not occur in Polynemula, which suggests that Platyfrons is generically distinct from Polynemula. Neotropical hosts. Unknown. Important reference. Yoshimoto (1990).